9017958
4
base #(num to list)
m:
    29
    +
    push-b
    +
    pop-b
    empty-list
    @2
    3
    +
    7
    %
    copies
    @7
    range1
    catenate #(list+list)
        show
        3
        rjust
    m3
    7
    chunks
    unlines
    new-line
    new-line